Auroras

Mars Has Auroras Without a Global Magnetic Field, And We Finally Know How

Mars Has Auroras Without a Global Magnetic Field, And We Finally Know How

Earth’s auroras are a glorious wonder, but our planet isn’t the only place in the Solar System where these phenomena can be found. An atmospheric glow, albeit sometimes in invisible wavelengths, has been spotted at every planet except Mercury, and even some moons of Jupiter… and even a comet. But Mars is where it gets interesting. …

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The Ghostly Sounds of Auroras Can Be Heard, Even When They're Invisible

The Ghostly Sounds of Auroras Can Be Heard, Even When They’re Invisible

If you’re up high, and you listen carefully on nights when the northern sky dances with blazing sheets of green light – Earth’s spectacular aurora borealis – you might hear some ghostly sounds.   Almost imperceptible, the sounds had only been heard during the wildest aurora displays, described as rushing sounds, like a waterfall at …

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